Determine wether the given situation is best described by a linear model or an exponential model. What function models the situation?The money in an account is quadrupling every month.At 0 months(the starting point) there was only one dollar.Answer choices-exponential model;f(x)=x^4-linear model;f(x)=4xLinear model;f(x)=x+4-exponential model;f(x)=4^x